<!doctype html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>按钮样式</title>
	<link rel="stylesheet" type="text/css" href="index.css">
	<style type="text/css">
		body{background: none;padding:100px;}
		span{float: left;margin-left:10px;}
	</style>
</head>
<body>
	<span class="btn">btn</span>
	<span class="btn1">btn1</span>
	<span class="btn2">btn2</span>
</body>
</html>